drawString for iOS and new ViewController for models list

contrib/mobile/CMakeLists.txt

contrib/mobile/drawContext.cpp

contrib/mobile/drawString.cpp

contrib/mobile/drawString.h

contrib/mobile/iOS/Onelab.xcodeproj/project.pbxproj

contrib/mobile/iOS/Onelab/DetailViewController.h

contrib/mobile/iOS/Onelab/DetailViewController.mm

contrib/mobile/iOS/Onelab/MasterViewController.mm

contrib/mobile/iOS/Onelab/en.lproj/iPadStoryboard.storyboard

contrib/mobile/iosGModel.h